<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea placeholder="请输入要BB的内容（做多吐槽120字）" maxlength="120"  v-model="msg"></textarea>

    <mt-button type="primary" size="large" @click="postAdd">发表评论</mt-button>

    <div class="cmt-list">
      <div class="cmt-item" v-for="(item, i) in comments" :key="i">
        <div class="cmt-title">
          第{{ i+1 }}楼&nbsp;&nbsp;用户：{{ item.user_name }}&nbsp;&nbsp;发表时间：{{ item.add_time | format }}
        </div>
        <div class="cmt-body">
          {{ item.content === 'undefined' ? '此用户很懒，嘛都没说': item.content }}
        </div>
      </div>

    </div>

    <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
  </div>
</template>

<script>
import {getComment} from "@/api"
import {postcomment} from "@/api"
import axios from 'axios';
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      pageindex: 1, // 默认展示第一页数据
      comments: [],// 所有的评论数据
      msg:''//评论数据
    };
  },
  created() {
    
    
    getComment({id:this.id,pageindex:this.pageindex}).then(result => {
      //  console.log(result);
          if (result.data.status === 0) {
           
            // this.comments = result.data.message;
            // 每当获取新评论数据的时候，不要把老数据清空覆盖，而是应该以老数据，拼接上新数据
            this.comments = this.comments.concat(result.data.message);
          } else {
            Toast("获取评论失败！");
          }


        });
  },
  props: ["id"],
  methods: {
    //添加内容
    postAdd(){
      if(this.msg.trim().length === 0){
        return Toast('评论内容不能为空');
      }



      postcomment({id:this.id,content:this.msg}).then(result =>{
        // console.log(result,88);
        //添加之后刷新
        if(result.data.status == 0){
          // console.log(99);
          
          var cmt ={
            user_name:'stt',
            add_time:Date.now(),
            content:this.msg.trim()
          };
          this.comments.unshift(cmt);
          this.msg="";
          // this.getMore() 
        }

        
      });

    },
    // getComment(){},
   
    getMore() {
      // 加载更多
      this.pageIndex++;
      getComment({id:this.id,pageindex:this.pageindex}).then(result => {
      //  console.log(result);
          if (result.data.status === 0) {
           
            // this.comments = result.data.message;
            // 每当获取新评论数据的时候，不要把老数据清空覆盖，而是应该以老数据，拼接上新数据
            this.comments = result.data.message.concat(this.comments);
          } else {
            Toast("获取评论失败！");
          }
        });
    }
  },
  
};
</script>

<style lang="less" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>
